cpu won't start unless I apply warm air to mb

First thing in the morning when I start my PC it shuts down after pressing power button. If I apply warm air to mb, it starts after applying air for about 2 minutes. It will then run all day, even if I shut it down and restart after an hour or so.

Some mboards develop this problem - electrolytic capacitors were installed on them that were not properly made, and they fail eventually - the mboard manufacturer didn't know they were improperly made at the time the mboard was made.

Open up your case and examine the mboard to see if you have bad capacitors, and/or other findable signs of mboard damage .

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